Before a project is built, a study must be done to determine if it will fill a transportation need, will not negatively impact the surrounding area and fits the department's overall plan. During the study phase, potential projects are analyzed to determine if they are cost effective, while also efficiently improving mobility. Some of these projects have moved beyond the study phase and are under construction.
| Location | Project | Description |
| Hondo | US 90 | Expanding US 90 from Elm Slough to Castro Avenue |
| Kerrville | Lemos Bridge | Replacing the Lemos Bridge on FM 394 |
| San Antonio | Austin-San Antonio Commuter Rail | A feasibility study of a passenger rail system between Austin and San Antonio |
| San Antonio | I-10 at Camp Bullis | Improvements to I-10 from Camp Bullis to Dominion Drive |
| San Antonio | I-37 at Loop 13 | The reconfiguration of the I-37 and Loop 13 interchange |
| San Antonio | I-410 at Ingram Road | Expanding I-410 from Culebra Road to Ingram Road |
| San Antonio | I-410 at Nacogdoches | Upgrades to I-410 overpasses at Nacogdoches, Harry Wurzbach and Salado Creek |
| San Antonio | Spur 421 | Widens Spur 421 from Evers Road to I-10 from four lanes to seven |
| San Antonio | Walters Street Bridge | Replacing the Walters Street Bridge over I-35 |
125 East 11th Street . Austin, Texas 78701 
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